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INPP4B pin



Methodology: IHC

Clinical Significance:
INPP4B encodes the inositol polyphosphate 4-phosatase type II, one of the enzymes involved in phosphatidylinositol signaling pathways. This antibody is useful as a diagnostic aid for basal like breast carcinomas, as the absence of expression of INPP4B, has been shown in our hands to have a 90% sensitivity and 80% specificity for basal-like breast carcinomas, which closely reflects the reported literature. INPP4B will be run in a panel with other antibodies used in the diagnosis of basal-like breast carcinomas, such as, Nestin, Keratin 5, and c-kit. Subcellular Localization: membranous and cytoplasmic

Organ: Breast

Disease State: Breast Cancer

CPT Code(s): 88360 (reference only; CPTs may vary)

Turnaround Time: Within 1-2 business days of receipt

Schedule: Monday - Friday

Specimen Requirements:
• Formalin-fixed, paraffin-embedded (FFPE) tissue block or cell block - OR - • 1 unstained slide for each test requested plus 3-4 additional unstained slides cut at 4µm